Solenoid valve device

Abstract

An electromagnetic valve device comprises a valve seat unit, two non-return units, a shuttle unit and two electromagnetic units, wherein two input flow channels, two oil inlet flow channels and an output flow channel are formed in the valve seat unit. Each non-return unit comprises a non-return valve body, a non-return valve plug and a non-return elastic piece. The shuttling unit comprises a shuttling rod and two shuttling elastic pieces, when the shuttling rod is located at the preparation position, the check valve plug of the non-return unit is located at the blocking position, and when the shuttling rod is located at the working position, the shuttling rod forces the check valve plug of one non-return unit to move to the conduction position. Each electromagnetic unit comprises a fixed valve body, a movable magnetic core, an electromagnetic coil and a reset elastic piece, when the movable magnetic core of the electromagnetic unit is located at the closing position, the input flow channel is blocked from being communicated with the oil inlet flow channel, and when the movable magnetic core of the electromagnetic unit is located at the opening position, the input flow channel is not blocked from being communicated with the oil inlet flow channel. Therefore, only one electromagnetic valve device is needed to control the bidirectional force output action of the piston rod of the bidirectional oil hydraulic cylinder, and the overall equipment cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to a solenoid valve, in particular to a solenoid valve device. Background Art

[0002] like Figure 1 , 2 As shown, there is an existing solenoid valve that can be used with a one-way hydraulic cylinder 4, comprising a valve seat 1, a first electromagnetic module 2 disposed on the valve seat 1, and a second electromagnetic module 3 disposed on the valve seat 1, wherein the valve seat 1 is formed with an oil inlet hole 101, an oil outlet hole 102, and an oil return hole 103. The first electromagnetic module 2 is used to control the oil inlet hole 101 to be connected to the oil outlet hole 102, and the second electromagnetic module 3 is used to control the oil inlet hole 101 to be connected to the oil return hole 103. The one-way hydraulic cylinder 4 is connected between the oil outlet hole 102 and the oil return hole 103, and has a cylinder body 401, a piston rod 402, and a return spring 403 abutting against the cylinder body 401 and the piston rod 402.

[0003] Thus, when the first electromagnetic module 2 is connected to the oil inlet hole 101 and the oil outlet hole 102, the hydraulic oil input into the oil inlet hole 101 from an oil pump (not shown) can be discharged into the right half of the cylinder body 401 of the one-way hydraulic cylinder 4 through the oil outlet hole 102, forcing the piston rod 402 to move to the left. Conversely, when the second electromagnetic module 3 is connected to the oil inlet hole 101 and the oil return hole 103, the return spring 403 can push the piston rod 402 back to the right, forcing the hydraulic oil in the right half of the cylinder body 401 of the one-way hydraulic cylinder 4 to flow back to the oil return hole 103.

[0004] Since the solenoid valve can only be used to control the piston rod 402 of the one-way hydraulic cylinder 4 to perform one-way force output, if the solenoid valve is used to control a piston rod (not shown) of a two-way hydraulic cylinder to perform two-way force output, two solenoid valves must be connected in series to achieve the purpose, which will increase the overall equipment cost. Utility Model Content

[0005] The purpose of the utility model is to provide a solenoid valve device which can overcome at least one disadvantage of the prior art.

[0006] Therefore, the utility model electromagnetic valve device includes a valve seat unit, two check units, BCPI-240242 Page 2 / 8

[0007] Shuttle unit, and two electromagnetic units.

[0008] The valve seat unit is formed with two input flow channels, two oil inlet flow channels respectively connected to the input flow channels, and an output flow channel connected to the oil inlet flow channel. The output flow channel has a connecting hole section connected to the oil inlet flow channel, two mounting hole sections respectively connected to both ends of the connecting hole section, and two oil outlet hole sections respectively connected to the mounting hole section.

[0009] The non-return units are respectively arranged in the mounting hole sections, each non-return unit includes a non-return valve body formed with a non-return valve cavity, a non-return valve plug movably arranged in the non-return valve cavity, and a non-return elastic member arranged between the non-return valve body and the non-return valve plug. The non-return valve cavity of the non-return valve body of each non-return unit is connected with the connecting hole section and the corresponding oil outlet hole section, and the non-return valve plug can move between a blocking position and a conducting position relative to the non-return valve body. When the non-return valve plug is in the blocking position, the non-return valve plug blocks the non-return valve cavity to block the connection between the connecting hole section and the corresponding oil outlet hole section. When the non-return valve plug is in the conducting position, the non-return valve plug does not block the non-return valve cavity to connect the connecting hole section with the corresponding oil outlet hole section. The non-return elastic member has potential energy to drive the non-return valve plug to move toward the blocking position.

[0010] The shuttle unit includes a shuttle rod movably arranged in the connecting hole section, and two shuttle elastic members abutting between the shuttle rod and the check valve body of the check unit. The shuttle rod can move between a preparatory position and a working position relative to the valve seat unit. When the shuttle rod is in the preparatory position, the check valve plug of the check unit is located in the blocking position. When the shuttle rod is in the working position, the shuttle rod forces the check valve plug of one of the check units to move to the conducting position. The shuttle elastic member has potential energy to drive the shuttle rod to move toward the preparatory position.

[0011] The electromagnetic unit is arranged on the valve seat unit, and each electromagnetic unit includes a fixed valve body with a fixed valve cavity, a movable magnetic core movably arranged in the fixed valve cavity, an electromagnetic coil arranged on the outer side of the fixed valve body and used to drive the movable magnetic core, and a reset elastic member arranged between the fixed valve body and the movable magnetic core. The fixed valve cavity of the fixed valve body of each electromagnetic unit is connected with the corresponding input flow channel, and the movable magnetic core can move between a closed position and an open position relative to the fixed valve body. When the movable magnetic core of the electromagnetic unit is in the closed position, the movable magnetic core of the electromagnetic unit blocks the connection between the input flow channel and the oil inlet flow channel, and when the movable magnetic core of the electromagnetic unit is in the open position, the movable magnetic core of the electromagnetic unit blocks the connection between the input flow channel and the oil inlet flow channel.

[0012] When the movable magnetic core of the electromagnetic unit is in the closed position, the movable magnetic core does not block the communication between the input flow channel and the oil inlet flow channel, and the reset elastic member has the potential energy to drive the movable magnetic core to move toward the closed position.

[0013] The utility model electromagnetic valve device, each input flow channel has an axial input hole section extending in the axial direction, a transverse input hole section extending in the transverse direction and connected with the axial input hole section, and an input cavity section extending in the transverse direction and connecting the transverse input hole section with the fixed valve cavity of the corresponding electromagnetic unit. Each oil inlet flow channel has a transverse oil inlet hole section extending in the transverse direction and connected with the input cavity section of the corresponding input flow channel, and a longitudinal oil inlet hole section extending in the longitudinal direction and connecting the transverse oil inlet hole section with the connecting hole section of the output flow channel. When the movable magnetic core of the electromagnetic unit is in the closed position, the movable magnetic core of the electromagnetic unit blocks the connection between the input cavity section of the input flow channel and the transverse oil inlet hole section of the oil inlet flow channel. When the movable magnetic core of the electromagnetic unit is in the open position, the movable magnetic core of the electromagnetic unit does not block the connection between the input cavity section of the input flow channel and the transverse oil inlet hole section of the oil inlet flow channel.

[0014] In the utility model solenoid valve device, the movable magnetic core has a convex plug portion protruding inwardly along the horizontal direction. When the movable magnetic core of the electromagnetic unit is in the closed position, the convex plug portion of the movable magnetic core of the electromagnetic unit blocks the lateral oil inlet hole section of the oil inlet channel. When the movable magnetic core of the electromagnetic unit is in the open position, the convex plug portion of the movable magnetic core of the electromagnetic unit does not block the lateral oil inlet hole section of the oil inlet channel.

[0015] In the electromagnetic valve device of the utility model, when the movable magnetic core of the electromagnetic unit is in the closed position, the shuttle rod is in the preparatory position, and the check valve plug of the check unit is in the blocking position; when the movable magnetic core of the electromagnetic unit is in the open position, the shuttle rod is in the working position, and the shuttle rod forces the check valve plug of one of the check units to move to the conduction position, and the check valve plug of the other check unit is located at the conduction position.

[0016] The beneficial effect of the utility model is that the utility model utilizes the input flow channel, the oil inlet flow channel, and the output flow channel of the valve seat unit in conjunction with the design of the check unit, the shuttle unit, and the electromagnetic unit. By controlling an oil pump to select to input hydraulic oil from different input flow channels, a piston rod of a two-way hydraulic cylinder can be controlled to produce a two-way output effect. In this way, only one electromagnetic valve device of the utility model is needed to control the two-way output actuation of the piston rod of the two-way hydraulic cylinder, which can effectively reduce the overall equipment cost.

[0017] BCPI-240242 Page 4 / 8 BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of an existing solenoid valve;

[0019] Figure 2 It is a top view of the existing solenoid valve, illustrating the use of the existing solenoid valve in combination with a one-way hydraulic cylinder;

[0020] Figure 3 It is a front view of an embodiment of the solenoid valve device of the utility model;

[0021] Figure 4 is a top view of the embodiment;

[0022] Figure 5 It is along Figure 4 A sectional view taken along line V-V in FIG.

[0023] Figure 6 is similar to Figure 5 , illustrating that this embodiment is used in conjunction with a bidirectional hydraulic cylinder. DETAILED DESCRIPTION

[0024] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0025] See also Figure 3 , 4 5 is an embodiment of the electromagnetic valve device 100 of the utility model. The electromagnetic valve device 100 includes a valve seat unit 10, two check units 20, a shuttle unit 30, and two electromagnetic units 40.

[0026] The valve seat unit 10 is formed with two input flow channels 11 , two oil inlet flow channels 12 respectively connected to the input flow channels 11 , and an output flow channel 13 connected to the oil inlet flow channels 12 .

[0027] The output channel 13 extends along the transverse direction Y and has a connecting hole section 131 connected to the oil inlet channel 12, two mounting hole sections 132 respectively connected to the two ends of the connecting hole section 131, and two oil outlet hole sections 133 respectively connected to the mounting hole sections 132.

[0028] Each input channel 11 has an axial input hole section 111 extending along the axial direction X, a transverse input hole section 112 extending along the transverse direction Y and communicating with the axial input hole section 111 , and an input cavity portion 113 extending along the transverse direction Y.

[0029] Each oil inlet channel 12 has a transverse oil inlet hole section 121 extending along the transverse direction Y and connected to the input cavity 113 of the corresponding input channel 11, and a longitudinal oil inlet hole section 122 extending along the longitudinal direction Z and connecting the transverse oil inlet hole section 121 and the connecting hole section 131 of the output channel 13.

[0030] The check units 20 are respectively arranged in the mounting hole sections 132 , and each check unit 20 includes a check valve body 21 forming a check valve cavity 211 , a check valve plug 22 movably arranged in the check valve cavity 211 , and a check elastic member 23 arranged between the check valve body 21 and the check valve plug 22 .

[0031] BCPI-240242 Page 5 / 8

[0032] The check valve cavity 211 of the check valve body 21 of each check unit 20 communicates with the connecting hole section 131 and the corresponding oil outlet hole section 133, and the check valve plug 22 can be in a blocking position relative to the check valve body 21 (see Figure 5 ) and a conducting position (see Figure 6 The non-return elastic member 23 has the potential energy to drive the non-return valve plug 22 to move toward the blocking position.

[0033] like Figure 5 As shown, when the check valve plug 22 is in the blocking position, the check valve plug 22 blocks the check valve cavity 211 to block the connection hole section 131 from communicating with the corresponding oil outlet hole section 133, as shown in FIG. Figure 6 As shown, when the check valve plug 22 is in the conducting position, the check valve plug 22 does not block the check valve cavity 211 to connect the connecting hole section 131 with the corresponding oil outlet hole section 133 .

[0034] like Figure 5 , 6 As shown, the shuttle unit 30 includes a shuttle rod 31 movably disposed in the connecting hole section 131 , and two shuttle elastic members 32 abutting between the shuttle rod 31 and the check valve body 21 of the check unit 20 .

[0035] The shuttle rod 31 can be in a preparatory position relative to the valve seat unit 10 (see Figure 5 ) and a working position (see Figure 6 The shuttle elastic member 32 has the potential energy to drive the shuttle rod 31 to move toward the preparation position.

[0036] like Figure 5 As shown, when the shuttle lever 31 is in the preparatory position, the shuttle lever 31 will not drive the check valve plug 22 of the check unit 20, and the check valve plug 22 of the check unit 20 is located in the blocking position, such as Figure 6As shown, when the shuttle lever 31 is in the working position, the shuttle lever 31 forces the check valve plug 22 of one of the check units 20 to move to the conducting position, but does not drive the check valve plug 22 of the other check unit 20 .

[0037] like Figure 5 , 6 As shown, the electromagnetic units 40 are arranged on both sides of the valve seat unit 10 in the horizontal direction Y, and each electromagnetic unit 40 includes a fixed valve body 41 formed with a fixed valve cavity 411, a movable magnetic core 42 movably arranged in the fixed valve cavity 411, an electromagnetic coil 43 arranged on the outside of the fixed valve body 41 and used to drive the movable magnetic core 42, and a reset elastic member 44 arranged between the fixed valve body 41 and the movable magnetic core 42.

[0038] The movable magnetic core 42 has a protruding plug portion 421 protruding inwardly along the horizontal direction Y.

[0039] The fixed valve cavity 411 of the fixed valve body 41 of each electromagnetic unit 40 is connected to the corresponding input channel 11 , and the input cavity portion 113 of each input channel 11 is connected to the transverse input hole section 112 and the fixed valve cavity 411 of the fixed valve body 41 of the corresponding electromagnetic unit 40 .

[0040] The movable magnetic core 42 can be in a closed position relative to the fixed valve body 41 (see Figure 5 ) and an open position (as shown) Figure 6 The resetting elastic member 44 has the function of driving the BCPI-240242 Page 6 / 8

[0041] The potential energy of the movable magnetic core 42 moves toward the closed position.

[0042] like Figure 5 As shown, when the movable magnetic core 42 of the electromagnetic unit 40 is in the closed position, the movable magnetic core 42 of the electromagnetic unit 40 blocks the connection between the input cavity portion 113 of the input flow channel 11 and the transverse oil inlet hole section 121 of the oil inlet flow channel 12. In this embodiment, the convex plug portion 421 of the movable magnetic core 42 of the electromagnetic unit 40 can block the transverse oil inlet hole section 121 of the oil inlet flow channel 12.

[0043] In this embodiment, when the movable magnetic core 42 of the electromagnetic unit 40 is in the closed position, the shuttle rod 31 is in the preparatory position, and the check valve plug 22 of the check unit 20 is in the blocking position.

[0044] like Figure 6As shown, when the movable magnetic core 42 of the electromagnetic unit 40 is in the open position, the movable magnetic core 42 of the electromagnetic unit 40 does not block the connection between the input cavity portion 113 of the input flow channel 11 and the lateral oil inlet hole section 121 of the oil inlet flow channel 12. In this embodiment, the convex plug portion 421 of the movable magnetic core 42 of the electromagnetic unit 40 does not block the lateral oil inlet hole section 121 of the oil inlet flow channel 12.

[0045] In this embodiment, when the movable magnetic core 42 of the electromagnetic unit 40 is in the open position, the shuttle rod 31 is in the working position, and the shuttle rod 31 forces the check valve plug 22 of one of the check units 20 to move to the conduction position, and the check valve plug 22 of the other check unit 20 is located in the conduction position.

[0046] By this, Figure 5 , 6As shown, the utility model can be applied to drive a bidirectional hydraulic cylinder 200 connected between the oil outlet hole sections 133, and the bidirectional hydraulic cylinder 200 has a cylinder body 210 and a piston rod 220. When the piston rod 220 is driven to move toward the right, the electromagnetic coil 43 of the electromagnetic unit 40 can be simultaneously excited, so that the movable magnetic core 42 of the electromagnetic unit 40 is simultaneously moved to the open position. In this way, an oil pump (not shown) can be used to input hydraulic oil into one of the input channels 11 located on the left side, and the hydraulic oil The hydraulic oil can flow into the connecting hole section 131 of the output flow channel 13 through the axial input hole section 111, the transverse input hole section 112, the input cavity 113 of one of the input flow channels 11, and the transverse oil inlet hole section 121 and the longitudinal oil inlet hole section 122 of one of the oil inlet flow channels 12. At this time, the hydraulic oil can simultaneously push the shuttle rod 31 and the check valve plug 22 of the other check unit 20 in the opposite direction. In this process, the shuttle rod 31 can push the check valve plug 22 of one of the check units 20 to the conducting position, and the hydraulic oil can Push the check valve plug 22 of the other check unit 20 to the conducting position, so that the hydraulic oil can be output to the left half of the cylinder body 210 of the two-way hydraulic cylinder 200 through the check valve cavity 211 of the check valve body 21 of the other check unit 20 and one of the oil outlet hole sections 133, driving the piston rod 220 to move rightward. At the same time, the hydraulic oil in the right half of the cylinder body 210 of the two-way hydraulic cylinder 200 can be output to the left half of the cylinder body 210 of the two-way hydraulic cylinder 200 through the other oil outlet hole section 133 and one of the oil outlet hole sections 133. The check valve chamber 211 of the check valve body 21 of a check unit 20 and the connecting hole section 131 of the output flow channel 13 flow into the longitudinal oil inlet hole section 122 and the transverse oil inlet hole section 121 of another oil inlet flow channel 12, and flows back to an oil tank (not shown) through the input chamber portion 113, the transverse input hole section 112, and the axial input hole section 111 of another input flow channel 11 located on the right side. That is to say, the hydraulic oil is input from one of the input flow channels 11 located on the left side, and discharged from the other input flow channel 11 located on the right side.

[0047] Similarly, if the piston rod 220 is to be driven to move in the opposite direction, the oil pump (not shown) can be changed to input the hydraulic oil into the other input channel 11 located on the right side, and finally the hydraulic oil is changed to flow back to the oil tank (not shown) through one of the input channels 11 located on the left side. In this way, the piston rod 220 can be driven to move in the left direction.

[0048] It should be noted that when the piston rod 220 reaches a predetermined position, the oil pump (not shown) can be stopped and the electromagnetic unit 40 can be powered off to allow the reset elastic member 44 of each electromagnetic unit 40 to push the movable magnetic core 42 back to the closed position. At this time, the shuttle elastic member 32 will push the shuttle rod 31 back to the preparatory position, and the non-return elastic member 23 of each non-return unit 20 will also push the non-return valve plug 22 back to the blocking position. In this way, the hydraulic oil in the cylinder body 210 of the bidirectional hydraulic cylinder 200 will have nowhere to flow, forming a pressure-maintaining state, so that the piston rod 220 can be positioned at the predetermined position and no longer move.

[0049] Through the above description, the advantages of the utility model can be summarized as follows:

[0050] The utility model utilizes the input flow channel 11, the oil inlet flow channel 12, and the output flow channel 13 of the valve seat unit 10 in conjunction with the design of the check unit 20, the shuttle unit 30 and the electromagnetic unit 40. By controlling the oil pump to select to input hydraulic oil from different input flow channels 11, the piston rod 220 of the bidirectional hydraulic cylinder 200 can be controlled to produce a bidirectional output effect. Compared with the prior art, the utility model only needs one to control the bidirectional output action of the piston rod 220 of the bidirectional hydraulic cylinder 200, which can effectively reduce the overall equipment cost.

[0051] In summary, the solenoid valve device of the utility model can not only control the bidirectional output actuation of the piston rod of the bidirectional hydraulic cylinder, but also effectively reduce the overall equipment cost, so the purpose of the utility model can be achieved.

[0052] BCPI-240242 Page 8 / 8

[0053] The above description is only an embodiment of the present utility model, and should not be used to limit the scope of the present utility model. That is, all simple equivalent changes and modifications made according to the claims and the description of the present utility model are still within the scope of the present utility model.

Claims

1. A solenoid valve device, comprising a valve seat unit, two check units, a shuttle unit, and two solenoid units, characterized in that : The valve seat unit is formed with two input flow channels, two oil inlet flow channels respectively connected to the input flow channels, and an output flow channel connected to the oil inlet flow channel, wherein the output flow channel has a connecting hole section connected to the oil inlet flow channel, two mounting hole sections respectively connected to both ends of the connecting hole section, and two oil outlet hole sections respectively connected to the mounting hole section; The non-return units are respectively arranged in the mounting hole sections, each non-return unit comprises a non-return valve body with a non-return valve cavity, a non-return valve plug movably arranged in the non-return valve cavity, and a non-return elastic member arranged between the non-return valve body and the non-return valve plug, the non-return valve cavity of the non-return valve body of each non-return unit is connected with the connecting hole section and the corresponding oil outlet hole section, the non-return valve plug can move between a blocking position and a conducting position relative to the non-return valve body, when the non-return valve plug is in the blocking position, the non-return valve plug blocks the non-return valve cavity to block the connecting hole section from being connected with the corresponding oil outlet hole section, when the non-return valve plug is in the conducting position, the non-return valve plug does not block the non-return valve cavity to connect the connecting hole section with the corresponding oil outlet hole section, and the non-return elastic member has potential energy to drive the non-return valve plug to move toward the blocking position; The shuttle unit comprises a shuttle rod movably arranged in the connecting hole section, and two shuttle elastic members abutting between the shuttle rod and the check valve body of the check unit, the shuttle rod can move between a preparation position and a working position relative to the valve seat unit, when the shuttle rod is in the preparation position, the check valve plug of the check unit is located at the blocking position, when the shuttle rod is in the working position, the shuttle rod forces the check valve plug of one of the check units to move to the conducting position, and the shuttle elastic member has potential energy to drive the shuttle rod to move toward the preparation position; and The electromagnetic unit is arranged on the valve seat unit, and each electromagnetic unit includes a fixed valve body formed with a fixed valve cavity, a movable magnetic core movably arranged in the fixed valve cavity, an electromagnetic coil arranged on the outside of the fixed valve body and used to drive the movable magnetic core, and a reset elastic member arranged between the fixed valve body and the movable magnetic core. The fixed valve cavity of the fixed valve body of each electromagnetic unit is connected with the corresponding input flow channel, and the movable magnetic core can move between a closed position and an open position relative to the fixed valve body. When the movable magnetic core of the electromagnetic unit is in the closed position, the movable magnetic core of the electromagnetic unit blocks the connection between the input flow channel and the oil inlet flow channel. When the movable magnetic core of the electromagnetic unit is in the open position, the movable magnetic core of the electromagnetic unit does not block the connection between the input flow channel and the oil inlet flow channel. The reset elastic member has potential energy to drive the movable magnetic core to move toward the closed position.

2. The solenoid valve device according to claim 1, characterized in that: Each input flow channel has an axial input hole section extending in the axial direction, a transverse input hole section extending in the transverse direction and connected with the axial input hole section, and an input cavity section extending in the transverse direction and connecting the transverse input hole section with the fixed valve cavity of the corresponding electromagnetic unit. Each oil inlet flow channel has a transverse oil inlet hole section extending in the transverse direction and connected with the input cavity section of the corresponding input flow channel, and a longitudinal oil inlet hole section extending in the longitudinal direction and connecting the transverse oil inlet hole section with the connecting hole section of the output flow channel. When the movable magnetic core of the electromagnetic unit is in the closed position, the movable magnetic core of the electromagnetic unit blocks the connection between the input cavity section of the input flow channel and the transverse oil inlet hole section of the oil inlet flow channel. When the movable magnetic core of the electromagnetic unit is in the open position, the movable magnetic core of the electromagnetic unit does not block the connection between the input cavity section of the input flow channel and the transverse oil inlet hole section of the oil inlet flow channel.

3. The solenoid valve device according to claim 2, characterized in that: The movable magnetic core has a convex plug portion protruding inward along the horizontal direction. When the movable magnetic core of the electromagnetic unit is in the closed position, the convex plug portion of the movable magnetic core of the electromagnetic unit blocks the lateral oil inlet hole section of the oil inlet channel. When the movable magnetic core of the electromagnetic unit is in the open position, the convex plug portion of the movable magnetic core of the electromagnetic unit does not block the lateral oil inlet hole section of the oil inlet channel.

4. The solenoid valve device according to claim 1, characterized in that: When the movable magnetic core of the electromagnetic unit is in the closed position, the shuttle rod is in the preparatory position, and the check valve plug of the check unit is in the blocking position; when the movable magnetic core of the electromagnetic unit is in the open position, the shuttle rod is in the working position, and the shuttle rod forces the check valve plug of one of the check units to move to the conduction position, and the check valve plug of the other check unit is located in the conduction position.

Images